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Antivirus for Exchange 2007, BlackBerry, Cisco Unity

I am currently using symantec corportate for clients. In the past, we didn't install AV on the servers becuase the clients are all protected and emails were being scanned by our relay before they hit our mail server. We didn't have beefy hardware and didn't want the servers bogging down. However, now we need to be *sure* that viruses don't hit any one of those servers...

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For 2007 I would recommend either Trendmicro Scanmail or MS Forefront.

As you can load multiple scan engines into forefront I think that is the best solution and gives nearly bullet proof performance in terms of new threats.

What do you mean by BES virus scanning? Do you mean on the handheld or on the bes server itself? Virus scanning on the exchange server should be enough to protect email flowing out through through the handheld.

To protect the bes handheld use a security policy that does not allow the user to install software. That will prevent anything from infecting the handheld.

I wasn't sure if the BES server should have virus scanning software. I am using security policies on the hand helds and users can't install software.

Cisco recommends to run AV on the Unity server...

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I've used Panda which was very good - but can cause probs when uninstalling or upgrading, plus most of their better tech support people are spanish speaking which can cause probs for those who don't speak the language.

Also used McAfee/Symantec - don't like them!!!!

Currently using Sophos which includes Pure Message for AntiSpam.
Very good product.

I have a ton of experience with groupshield and I hate it. Of course my experience is on boxes with 4k-7k users and several hundred thousand emails per day per server.

CPU usage of your scanner will depend on what kind of options you have enabled. For instance you can specify the number of threads that the VSAPI can call up at any one time. More threads means more CPU use. If you use things like heuristic scanning the CPU usage goes up. The best way to keep AV from using up a lot of CPU is to block attachment types that are used heavily by virii. We block almost all tier1 file types.

I would definitely run file level virus scanning on your bes server. But I'm not aware of any product that will scan messages as they flow through the BES server. Mainly because the messages are encrypted and to insure security the only thing that should be able to unencrypt the messages is the receiving handheld.